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STMicroelectronics TSC240 Zero-Drift Current Sense Amplifiers

STMicroelectronics TSC240 Zero-Drift Current Sense Amplifiers are precision, bidirectional amplifiers designed for high-accuracy current measurement in industrial and consumer applications. Operating over a 2.7V to 5.5V supply voltage range, the STMicroelectronics TSC240 amplifiers support both high-side and low-side current sensing with excellent common-mode rejection. These devices feature a low input offset voltage and minimal drift over temperature, thanks to zero-drift architecture, ensuring stable and reliable performance across varying conditions. With a preset gain of 20V/V, the TSC240 offers flexibility for different sensing requirements. Housed in compact SO8 or TSSOP8 packages, the TSC240 amplifiers are ideal for use in power management systems, motor control, and battery-operated devices where precision and efficiency are critical.

Features

  • Enhanced PWM rejection
  • Excellent 132dB DC CMRR
  • Wide -4V to 100V common-mode range
  • 20V/V available gain
  • Gain accuracy
    • 0.20% maximum error
    • 2.5ppm/°C maximum drift
  • Offset accuracy
    • ±20μV maximum voltage
    • 150nV/°C maximum drift
  • 2.4mA maximum quiescent current
  • SO8 and TSSOP8 package options
  • RoHS compliant

Applications

  • Motor controls
  • Solenoid and valve controls
  • Power management
  • Industrial process control
  • Telecom equipment

Specifications

  • 2.7V to 5.5V operating supply voltage range
  • -4V to +100V operating common-mode voltage range on the input pins
  • 2.4mA to 2.6mA maximum power supply current consumption range
  • Input
    • 20µV to 56µV maximum offset voltage range
    • 150nV/°C maximum offset drift vs. temperature
    • 75dB to 132dB typical common-mode rejection range
    • 150µA to 250µA maximum input bias current range
    • 120dB typical supply voltage rejection
  • Output
    • 20V/V typical gain
    • ±0.20% maximum gain error
    • ±2.5ppm/°C maximum gain error vs. temperature
    • ±0.001% typical non-linearity error
    • 30mV typical output swing to the positive rail
    • 4mV typical output swing to GND
    • 30mA to 50mA maximum output current range
    • 1.5VmV/mA maximum load regulation
    • 2.2nF maximum capacitive load
  • Offset adjustment
    • 20µV/V typical reference voltage rejection ratio
    • 0.1% typical reference divider accuracy
  • Dynamic performance
    • 100kHz to 560kHz typical bandwidth range
    • 2V/µs typical slew rate
    • 5µs typical settling time
    • 2.5µs typical PWM rejection settling time
  • 50nV/√Hz typical voltage noise density
  • ESD ratings
    • 2000V Human Body Model (HBM)
    • Charged Device Model (CDM)
      • 1000V for the SO8
      • 750V for the TSSOP8
  • Maximum junction-to-ambient thermal resistance
    • 125°C/W for the SO8
    • 120°C/W for the TSSOP8
  • -40°C to +125°C operating free-air temperature range
  • +150°C maximum junctin temperature

Block Diagram

Block Diagram - STMicroelectronics TSC240 Zero-Drift Current Sense Amplifiers

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Published: 2025-10-20 | Updated: 2025-10-28